Search-light mechanism.



J. L, HALL. SEARCH LIGHT-niguna. .APPLIQATIOH FILED un. 21,' i'slo.

Witnesses:

9AM v MQW@ J. L HALL.

SEARCH LIGHT MECHANIS'M.

APPLICATION FILED APR. 21. 1910.

Patent-,ed Aug. 4, 1914.

2 SHEETS-SHBET 2.

Inventor l John L.H'a||, bym, His Attorney.

Witnessesz im K/4L provision of a devicel of this character which f' issimple and eiiicient in construction and UNITED sTATEs PATENT oEEicE.

JOHN LHALL, OP SCHENECTADY, NEW YORK, AssIGNOR To GENERAL ELECTRICCOMPANY, A CORPORATION OF NEW YORK.

` SEARCH-LIGHT MEGHANISM.

i vSpeccatioiijif Letters Patent.

. Patented Aug. 4, 1914.

lApplikation inea A'prn 21.11910. se'riaino. 556,685. y

anism, of which the following is a specification. i

This invention relatesto searchlight projectors or the like'and has forits obj ect the which; provides convenient means for adjusting -andmanipulating the parts.

One of 'the objects of my invention is 'tol provide means forconveniently adjustingr the electrodes with reference toreach other.

Inl accomplishing this, I provide means whereby one of ,theelectro'desmay be ad' justed`with reference ,to the otherA in two planes. This mayhel done from a' position outside of the projector casing.

Another object of my invention is to pro- .vide means whereby the lampmechanism maf;r be quickly replaced. This is, accomplished bysoarranging'the parts that the lamp mechanism may be removed as a unitfrom the casing. The arrangement is such that the lamp mechanism ismovably mounted upon lan adjustable-carriage, so that 1n ordinaryadjustment the carriage is moved a5' A Awhen the lamp is removed.

while the lamp mechanism may be removed and replaced withoutdisturbingtheadj ustnient. I'also provide means whereby the current to the lamp isautomatically cut off vAnother object of my invention isto provide meanswherebyr the adjusting rods which extend through the casing mayautomatically detach themselves from the lamp mechanism when the latteris removed and may be again easily attached to the mechanism when thelamp is replaced.

Other objects of'my invention will appear in the course of the followingspecification, in which I have shown my invention embodied in concreteform for the purposes of illustration.

In the drawings disclosing my invention embodied in concrete form,Figure lrepre- Referring sents a sectional view of the lower part of'the` projector; Fig. 2 shows a similar view with the lamp mechanismmoved `iipori the gcarriagefso as to o pen the circuit; Fig.l 3represents a plan view of the lamp mechanism andsthe carriage; Figs. 4,5 and 6 show the details of construction of the electrode adjustingmechanism; and Fig. 7 is a reduced View of the whole projector showingthe position of 'the adjusting rods in the casing.

the casing of the projector, within which is mounted 'the carriage 11.This carriage is vmovably' mounted in guides .12 and is adljusted bymeans of hand'wheel 13 13', which 'Operates' a spur gear 14 through wormgearing 15. This spur gear` coperates with a rack l16 upon thecarriageto move it forward and back, for focusing the lamp. The

to the drawings, 10 represents` lamp mechanism as a unit is slidablymounted in the guides 12. A

The particular form or structure of the lamp mechanism forms' no part ofmy invention. Forpurposes of illustration, I have shown the' lampmechanism which is described in my previous application, Serial` No.422,253. It is therefore unnecessary to describe the details of thislamp mechanism. Generally speaking,l the lamp vconsists of two uprightframes 18`and 19, each mounted upon rollers in the guides 20. Theseframes are inclined away from each other so that the tops' are asufficient distance apart to admit the 'twoelectrodes The frames aremoved in the guides 20 toward and from each other by electromagneticmechanism, described in previous application above referred to. The lampmechanism slides in the guides 12 and is forced inward until the switchblades 23 on the lamp frame engage the clips 24 on the carriage providedwith a iexible connection 24 to close the circuit `through the lamp. Inorder to secure the a qu Carbme; equired'. 'The `Y any bu f maval, andfm.- The vp 11), ALLI.'

A Refeiiilg L, and 6, it will for@ La .be-.gegen that elecma is pivo'for 4I), .2 1 G i'novement in @we p'anes and that means are movded foradjusting the, eectode in the A two lanes in am accurate. :m simplemandeca@ Y@ may ner 'mm n. point. ouside ofthe projector and ihm; theadjlstng -mechmrsm in 1w casino'. Eeatrode 21 is .mounted n a! Wayhampa@ 'e removal renacilg holder or suppm't having secured to a theamp, k shaft- 529 fom'nng a journal for the hokei. m/llafmu n The upperend of the. frame 18 is provided @Siam and wh with ugs farming bearingsfor shaft 51. o- @vsn wen is. Thslsnat is provided with a Spila thfead@ai {nca} n CFA if) of rib 32 adapted t@ engage a pin or projecefef.E71: Wd be lot). im th. hoder Q8. The bearing Q1 bracket am ears 35malintesi upon th 1 Qi# Shaft Si. provides a healing oi the Sra'. f The.shaft 29 exten-.s hrough the bmut and the. loda is suppow' in he bearirat 36. By turning the Shaft 31, thfl tion '-33 Wl be engaged by the ribac 51 electroe thereby mmf-d in a horizontal plane in the bearing 34. ASecond Shaft 3T 30 is moumed in the frame 1S and 'is also pms vided Witha s 'mal rib, Il; thS case pw vde n disk having; a Spiral f anditransversely of the shaft nsteai 0: dnay, as 'in the. case of the pin 59projecting om t' b f gages the fzx So hat v' is 'uuxm'7 ihre Waring Wliw the f. centr. wu cause the, eecmdvo rloxe in a .'erca gane.. im@ 3?'Tlurn is @my nectaf with Se've.- l', by isfsuldd couplngs 42. The; s 9il are adapted to recave the shafts i3 and a. @in 4A- 'ts nu a 45 slotin the Sleen, as shown in Fig. The

shaf- Mrmged tu Side through a H bearing in fhg ecm?? cfuinv. The. xm isprovs 'wtl' fm opening to recave, shaft and is hdd in place by plate 50removing @ne plate, the ball .with the Shaft "at m? the bali, while. thefme svm 3 y L Y, l"

4. In a searchlight projector or the like, in the easing and meansorlocking the latthe combination With` arc lamp mechanism ter section inthe casing. 10 slidably mounted Within the projector. cas- In WitnessWhereof,'1 have hereunto set ing, of electrode 'adjusting mechanismhavmy hand this 18th day of April, 1910.

ing telescopng sectional shafts, one'section JOHN L. HALL beingconnected to the adjusting mechanism Wvtnesses:

by a universal joint, While the other section BENJAMIN B. HULL,

is-slidably mounted in a universal bearing HELEN ORFORD.

